1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78092f30c986c71c27fded2d541c5142caca7366f3cd6805db8e3cde93e39019. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a61a024-55a9-4def-8e50-2014439f6c86.json and https://artists.proofprofile.net/proofs/artist/7a61a024-55a9-4def-8e50-2014439f6c86.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a43e09d556d5adf63f3704640631d398659c100659e04d7413c895132d53ef. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaab61fb5ae038f7c521902db4c33880c73d9bc634ed423edac27f043a09dbf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd2b8a8f5d75696d567f7f349f7b8ec9e6914fbda20664b21cc9fe2caa0fe21. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:03:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fd239c4af5d159a3dde90bc511b5aa25f5e0761d3c52d37816c2342b0be879. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2969ea9776aea45316915414e96a60c98d554885930380d2e95f164ea6993d64. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:26:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaab61fb5ae038f7c521902db4c33880c73d9bc634ed423edac27f043a09dbf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0328508906906be1b547efdb18b44a079daa4b6185ea40272965d73d396502. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56593614b4ef013a13dbad15560dc4f7eada6f8d316eabcb927fe72ee9d45d09. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fa1de638a0f3827396de7737ddfa7c344f9f9da41998131f6db5a71829dfd5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:39:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fd239c4af5d159a3dde90bc511b5aa25f5e0761d3c52d37816c2342b0be879. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265fd9c15b8b36a37c9660b284a46813f9a7a324ca76a53f3d527a01f521b122. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:12:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99eb5a26ef3db2d96a97c67cfd915664c46bb8c165a83dc42334140daf95af7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd0891a7bc8f23547f55c6c8b87404b8df1bb02271f6e7e3dacb43426cfdf51. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:56:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322300488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5f744fe378145a92d5a38af849923004044998b2651dbcf4d305c426083b4d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0d2bfa15898f3328a81e132d5da8b6dbd9e3b16aa5a63b9185544f7fc3e7a6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7a9c3c5269e45f533ab4363c775b3328714e160c2366947492c9c8a6f22fea. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ322400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e434442704524e5270cc735ab9c61d41d78fe88e2ed4eb47e426e9c318aea67. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEKF22300401.